<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title></title>

  <style type="text/css">

    * {
      margin: 0;
      padding: 0
    }

  </style>

</head>

<body>
  <!-- 选项卡 -->
   <div id="box" class="box">
     <input type="button" value="选项卡1" class="btn">
     <input type="button" value="选项卡2">
     <input type="button" value="选项卡3">
     <div style="display:block;">11111</div>
     <div>22222</div>
     <div>33333</div>
   </div>

   <div id="box2" class="box">
     <input type="button" value="选项卡1" class="btn">
     <input type="button" value="选项卡2">
     <input type="button" value="选项卡3">
     <div style="display:block;">11111</div>
     <div>22222</div>
     <div>33333</div>
   </div>

<div id="div1"></div>
<div id="div2"></div>
</body>
<script src="bundle.js" charset="utf-8"></script>
</html>
